Gemstone



FIG. 1 is a front and right side view of a gemstone showing my new design.

FIG. 2 is a plan view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is a cross-section thereof.

FIG. 5 is a top perspective thereof.

FIG. 6 is a bottom perspective thereof; and,

FIG. 7 is a side perspective thereof. 

The ornamental design for a gemstone, as shown and described. 